<?php

/**
 * @file
 * SQLite specific install functions
 */

class DatabaseTasks_sqlite extends DatabaseTasks {
	protected $pdoDriver = 'sqlite';

	public function name() {
		return st('SQLite');
	}

	/**
	 * Minimum engine version.
	 *
	 * @todo: consider upping to 3.6.8 in Drupal 8 to get SAVEPOINT support.
	 */
	public function minimumVersion() {
		return '3.3.7';
	}

	public function getFormOptions($database) {
		$form = parent::getFormOptions($database);

		// Remove the options that only apply to client/server style databases.
		unset($form['username'], $form['password'], $form['advanced_options']['host'], $form['advanced_options']['port']);

		// Make the text more accurate for SQLite.
		$form['database']['#title'] = st('Database file');
		$form['database']['#description'] = st('The absolute path to the file where @drupal data will be stored. This must be writable by the web server and should exist outside of the web root.', array('@drupal' => drupal_install_profile_distribution_name()));
		$default_database = conf_path(FALSE, TRUE) . '/files/.ht.sqlite';
		$form['database']['#default_value'] = empty($database['database']) ? $default_database : $database['database'];
		return $form;
	}

	public function validateDatabaseSettings($database) {
		// Perform standard validation.
		$errors = parent::validateDatabaseSettings($database);

		// Verify the database is writable.
		$db_directory = new SplFileInfo(dirname($database['database']));
		if (!$db_directory->isWritable()) {
			$errors[$database['driver'] . '][database'] = st('The directory you specified is not writable by the web server.');
		}

		return $errors;
	}
}

